Skin, Hair and Nail Problems

I am having itching and infection in leg and finger area . I have been having this for a long time in the legs but it started recently in the fingers. There is a lot of uncomfortable itching in the area but the itching suddenly stops and then returns again. I also have allergy issues and I consume Fexofenadine tablets for it. I have attached pictures of the area so please check and tell me what it is, what it is caused by and how to get rid of it Does it look like a serious issue?

From 1 week i noticed a single pimple in penis skin now its show three or more it's spread in testis skin without pain and itching. But its show water type pimple. I can't understand what is this. Today only i shaved the whole area...

My son 3 year old started having itchy bumps last week which would last for few hours, his pediatrician prescribed Hicope syrup to treat allergy for 3days. During these 3 days when I was giving him syrup he dint get any allergy, but once the prescribed doses were over, he started getting allergy again and we are asked to continue with same syrup plus calapure lotion. How long urticaria lasts in toddler? Im unable to find the trigger for this. Is continuing the medication for long time cause no harm?

Irritation on face skin specially on neck and cheek skin with dryness on forehead skin, even I intake water properly whole day, please cure my face skin

The skin under the testicles and anus area is red, and very itchy, cant sleep I have attached pictures of it, please asses

I have been suffering from hyperpigmentation in underarm for long time. Can it be completely cured ?

Noticed one pimple on 3 days back and by evening I had around 7 pimple in penis head. No itching, irritation or burning sensation. It's been 3 days it looks still the same and no changes. There is no blister or any pop. what this could be? Attached image for reference.

I could see hair thinning on both left and right sides of my head. What should I do? I am already taking omega 3 and multivitamin

I was experiencing hairfall more lately. I have mildly low iron and b12. Pcod and thyroid tests were normal. Attaching pictures of scalp and back hair. Can someone tell next step and what's happening?

It is there from 4 to 5 years with no pain. It got a bit darker . Is it something dangerous. Please suggest